I get this  Coby 3.5-Inch Digital Photo Frame with Alarm clock dp356blk  on the surface it look like a great buy because , for such a inexpensive item , it pack a lot of attractive function . namely , it can be use as : - Digital photo frame with a 3.5 '' panel at 320x240 resolution - alarm clock with digital and analog display - mp3 player upon testing this unit , however , I start to see some of its problem : - the setup process be rather clunky and at time counter-intuitive . for example , you often need to press LEFT\/RIGHT button for the menu to move up\/down - to perform any simple task often require push button dozen of time . for example , just to change the music volume you need to first go up to to-level menu , then go down to ` setting '' , and then `` System setup '' , follow by another dozen of key press to finally arrive at `` volume '' - the unit have no internal battery . that mean it must remain plug in and can not be pass around like other photo frame . fortunately , the clock and internal setting be not lose when I unplug the unit -lrb- otherwise I would go crazy if I need to reset the clock every time -rrb- - it have no internal memory for photo . that mean you have to insert a sd\/sdhc card -lrb- which stick out like a sore thumb from the back -rrb- - if you have both photo file and music file on the sd card , it automatically play the music file while in slideshow mode . the only way around it be to set the music volume to ' 0 ' . - the 3.5 '' display be really too small for use as a photo frame , as it be just 1\/4 the area of a print 4x6 photo . even when use as a alarm clock , the number can hardly be see from across the room . the most serious problem with this photo frame be that : in slideshow mode , it do NOT sort photo file accord to either file name or file date . so the photo show be all jumble up , with no apparent order . after much experimentation , I finally figure out that the unit simply show file in the order they be write to the directory . so the solution be to make sure that file be write to the sd card either in alphabetical order , or accord to file date . this be obviously a very tedious process if I have to do that manually for hundred of file . fortunately , I be able to find a free utility call `` fatsorter 1.04 '' , which can automatically sort all file entry in directory into alphabetical order . after do that , the unit finally can show photo in the correct sequence . I decide to keep this unit despite of all its problem , mostly because I have invest so much time in get it to work . also the low cost make it hardly worth the trouble of return it . but right after this lesson , I order the  pandigital panimage pi8004w01b